Death of unopened flowers in cattleyas

[Merita]

Hello everyone:
I need advice on the flowering of cattleyas. In this summer season my plants are aborting the flowers and I don't know what it can be; of four I achieve one, of two one, and it is happening to me with almost all those that are opening pods. I put pictures of how the unopened flower begins to die. This has me very disappointed, I have read a lot and I can't find the cause, maybe someone has gone through the same thing and can clarify what is happening. I have been cultivating cattleyas for more than five years and it is the first time I have seen this. I appreciate the help you can give me. Greetings.